7 x ?
8 x ?
9 x ?
10/11 x ?
12 x ?
100

7 x 1

7

100

8 x 2

16

100

9 x 10

90

100

11 x 3

33

100

12 x 2

24

200

7 x 5

35

200

8 x 3

24

200

9 x 2 

18

200

11 x 3

33

200

12 x 5

60

300

7 x 6

42

300

8 x 7

56

300

9 x 9

81

300

10 x 100

1,000

300

12 x 6

72

400

7 x 9

63

400

8 x 60

480

400

9 x 4

36

400

11 x 1,000

11,000

400

12 x 9

108

500

7 x 21

147

500

8 x 400

3,200

500

9 x 300

2,700

500

100 x 1,000

10,000

500

12 x 120

1,440